INDIANA CDL AIR BRAKES PRACTICE TEST
6.
To perform an applied leakage test, the vehicle’s air pressure should be built up to maximum pressure. Check the air gauge to see that the air pressure should drop no more than:
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1 psi for single vehicles and 3 psi for a combination of 2 vehicles.
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5 psi for single vehicles and 6 psi for a combination of 2 vehicles.
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3 psi for single vehicles and 4 psi for a combination of 2 vehicles.
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2 psi for single vehicles and 5 psi for a combination of 2 vehicles.
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7.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could heat up.
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your brakes could become hard to press.
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your brakes could fail.
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None of the above.
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8.
ABS:
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should only be used on dry roads.
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is an addition to your normal brakes.
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allows you to brake harder.
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replaces your normal brakes.
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9.
Emergency brakes must be held on by:
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hydraulic pressure.
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dynamic pressure.
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air pressure.
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mechanical force.
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10.
The heavier the vehicle:
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the less work the brakes must do to stop it.
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the more work the brakes must do to stop it.
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the higher the center of gravity will be.
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None of the above.
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